[SOLVED] Thomson Quadra TV is showing "PI" on its screen.

I have a 14'' Thomson QuadraPlus (MatheMagic) TV Model: 14MT8DRZ/M [purchased in India] with TX807 Chassis.

My TV is showing "PI" in red color on screen's left side bottom.

If there is no solution/diagnosis for this, then I am listing out the the various problems that I'm facing after this "PI" Screen Code.

List of Problems:
1. Can not operate by Remote Control.
2. Volume +/- works but jumps like [Tab] on computer.
3. Can not get full menu if I press MENU on the TV set's Front Panel.
4. While trying to switch-off the TV by the Push-button on the Front Side, sometimes it does not work, sometimes it works flawlessly.
5. Can not Auto Install or Fine Tune the Channels.

All Colors and the Picture Quality is Excellent.

I would like to ask whether these problems need to be rectified individually? or is there any other solution?

These models have a memory ic inside, may be that corrupted
so go for chip replace or observe any humid environment near ur t..v upset